<template>
    <div class="login_container">
        <div class="login_box">
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>
            <el-form ref="loginFormRef" :model="loginForm" :rules="loginFormRules" label-width="0px" class="login_form">
                <!-- 用户名 -->
                <el-form-item  prop="username">
                  <el-input v-model="loginForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <!-- 密码 -->
                <el-form-item prop="password">
                  <el-input v-model="loginForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                </el-form-item>
                <!-- 按钮区域 -->
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>
<script>
export default{
data(){
    return {
        // 登录表单的数据绑定对象
        loginForm:{
            username:'admin',
            password:'123456'
        },
        loginFormRules:{
            // 验证用户名是否合法
            username:[
            { required: true, message: '请输入用户名', trigger: 'blur' },
            { min: 3, max: 5, message: '长度在 3 到 5 个字符', trigger: 'blur' }
            ],
            // 验证密码是否合法
            password:[
            { required: true, message: '请输入密码', trigger: 'blur' },
            { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
            ]
        }
    }
},
methods:{
    resetLoginForm(){
        // 重置登录表单
        // console.log(this);
        this.$refs.loginFormRef.resetFields()
    },
    login(){
        this.$refs.loginFormRef.validate(async valid=>{
            if(!valid) return ;
            // console.log(valid);
           const {data:res}= await this.$http.post("login",this.loginForm);
           if(res.meta.status!=200)return this.$message.error('登录失败')
           this.$message.success('登陆成功')
        //1.将登陆成功之后的token,保存到客户端的sessionStorage中
        //1.2 项目中除了登录之外的其他API接口,必须在登录后才能访问
        // 1.2 token只因在当前网站打开期间生效,所以将token保存在sessionStorage中
        console.log(res);
        window.sessionStorage.setItem('token',res.data.token)
        // 2. 通过编程式导航跳转到后台主页,路由地址是 /home 
        this.$router.push('/home')
        })
    }
 }
}
</script>



<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    width:450px;
    height:300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
.avatar_box{
    height: 130px;
    width:130px;
    border: 1px solid #EEE;
    border-radius:50% ;
    padding:10px;
    box-shadow: 0 0 10px #DDD;
    position: absolute;
    left: 50%;
background-color: #FFF;
    transform: translate(-50%,-50%);
    img{
        width: 100%;
        height: 100%;
        border-radius: 50%;
        background-color: #eee;
    }
}
.btns{
    display: flex;
    justify-content: flex-end;
}
.login_form{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
</style>